Rail anchor



FIG. 1 is an isometric view of a rail anchor showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view taken from the left of FIG. 1;

FIG. 6 is a side elevational view taken from the right of FIG. 1.

The ornamental design for a rail anchor, as shown and described.